Bush: public must guard against more shootings

US President George Bush said tonight that mass shootings are a reminder that people must be willing to raise a red flag about others’ disturbing behaviour.

"One of the lessons of these tragedies is to make sure that when people see somebody or know somebody who is exhibiting abnormal behaviour, you do something about it, to suggest that somebody take a look,2 the President said during an appearance at a high school in Ohio.